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UNITED STATES PATENT OFFICE.

JAMES BLACK, OF PHILADELPHIA, PENNSYLYANLX, ASSIGNOR TO 'ORL BROTHERS, OF SAME PLACE; GEO. M. IVORL ASSIGNOB TO IVM, S. VJORL.

STEAM-ENGINE.

Specification of Letters Patent No, 23,524, dated April 5, 1859.

To all whom t may concern:

Be it known that I, JAMES BLACK, of the city and county ot Philadelphia, in the State of Pennsylvania, have invented a new and useful Reciprocating Eccentric Revolving Steam-Engine; and I do hereby declare that the same is described and represented in the following specification and drawings.

The nature of my invention consists in connecting one end of a piston rod to a hoop or hoops which revolve on fixed circles set eccentrically from the shaft, upon which the cylinder turns, in which said piston traverses.

To enable others skilled in the art to make and use my invention I will proceed to describe its construction and operation referw ring to the accompanying drawing, in whichl C, is a base supporting the stands K, K, which. are tirmly fastened to it, to support the trnnnions B, B, ot the cylinder A, upon which it turns; these trunnions may be extended beyond the stands to receive pulleys or gears to communicate the power of the engine to the machinery which it is to operate. One ot' the trnnnions B, is made large enough to contain the steam ways which snpply the cylinder; the ways are made to receive the steam from the pipe H, which is in the stand K, while the exhaust steam escapes at the pipe I, on the opposite side of the trunnion or shatt B, the shoulder ot' the enlarged portion ot` the trunnion being formed with proper openings to receive and discharge the steam in a manner well. known to mechanics. Y

The cylinder A is similar to those in common use except the trnnnions above mentioned; and the piston rod is made to extend l through both of the cylinder heads, and has the piston fastened near its center, so that the rod traversing through both heads ot cylinder, may always keep it in such a position that the piston will work freely. The piston rod D, has a cross head F, at one end by which it is connected to the hoops, F, F, which turn on the rings G, Gr, or circles set eccentrically from the trunnions or shafts B, B, as shown in the drawing and fastened to the stands K, K; the steam ways being so arranged that when the cross head is nearest to the trunnions. the steam acts on the side of the piston farthest from the cross head, so as to force it from the trunnions and carries it around with the hoops F, F, to its greatest distance :trom the trunnion, changing the openings or ways in the shoulder of the journal, so as to let the steam act on the side of the piston next to the crossI head and draw it toward the trunnions and thus keep the hoops turning on the rings or circles set eccentrically to the trunnions on which the cylinder turns.

I believe I have described and represent-ed my invention so as to enable any person skilled in the art to make and use it.

I will now state what I desire to secure by Letters Patent, to wit:

The arrangement of the cylinder A, hoops F, F, and disks or wheels G, G, when said disks are set eecentrically to an axle, which pierces the cylinder' transversely. and one end ot the piston rod of the cylinder is connected with and operates the hoops, substan tially in the manner herein specitied.

JAMES BLACK. lVitnesses B. FRANKLIN CLARK, IVM. S. VORL. 

